Pilot-light for bunsen or other gas-burners using incandescent gas-mantles.



PATENTED APR. 18,- 1905.

. F. M. BROOKS.

PILOT LIGHT FOR BUNSBN OR OTHER GAS BURNERS USING INCANDESGENT I GAS MANTLES.

' ICATION FILED JAN. 7, 1905.

. ml l w ssss I mvmron Ah/ Afro/Mr UNITED STATES Patented April 18, 1905.

PATENT OFFICE.

FRANK M. BROOKS, OF NEW YORK, N. Y.

SPECIFICATION formingpart of Letters Patent No. 787,659, dated April 18, 1905.

Application filed. January 7, 1905. Serial No. 239,996.

To all whom it may concern:

Be it known that I, FRANK M. BROOKS, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented a new and useful Improvement in Pilot-Lights for Bunsen or other Gas-Burners Using Incandescent Gas-Mantles, of which the following is a description, reference being had to the accompanying drawings, in Which Figure 1 illustrates an elevation of a Bun sen burner embodying the invention, the gasplug and adjacent parts involved in theinvention being shown in section and in a position in which the gas to the burner is out 01f, leaving the normal pilot-light only burning. Fig. 2 illustrates a like view, the plug, however, having been turned into the position in which an augmented flow of gas is momentarily supplied to the pilot-tube, whereby the pilot-flame is projected in the form of a jet into the gas escaping at the top of the burner.

Prior to my invention pilot-lights of various construction have been used in connection with burners using incandescent gasmantles; but none of them, so far as I am aware, have been adapted to positively as sure the ignition of the gas the moment it appears at the burner without having the pilot-tube so located as to injure the mantle or without bringing the pilot-flame into such close contact with the Bunsen flame as to cause the Bunsen flame to carry the pilotflame upward with it, and thereby cause the gas-mantle to carbonize, thus impairing the brilliancy of the light.

It is the object of my invention, therefore, to so construct the apparatus as that I assure ignition of the gas the moment it appears'at the surface of the burner without the pilottube coming in contact with the gas-mantle or the continuous pilot-flame being in contact with the Bunsen flame.

In the drawings hereof, A represents the gas-supply pipe; B, the cock; (3, the Bunsen tube; D, the air-inlets therefor; E, the burner, which is provided with the usual wire-gauze; F, the tube of the pilot-light; G,

the part of the tube of the pilot-light which is permanently fixed to the cock B.

H is a socket, preferably attached to the part F of the pilot-tube, whereby it can be readily connected with or disconnected from the part G.

I is the gas-regulating screw or needlevalve, which controls the admission of gas to the pilot-tube.

J is the passage-way from the main gassupply to the port or passage K, which connects with the pilot-tube.

L is the plug of the cock. port through it.

N is the lever controlling the plug.

O and O are the devices whereby the lever end is manipulated.

P is a short port or opening connecting the plug-chamber in the cock with the port or opening K. v

Q, is a suitable cap or terminal to the'upper end of the pilot-tube F and may beneficially be made of lava or equivalent refractory material or of metal, as preferred, having in one side thereof a small opening R, at which normally burns the small pilot-flame S. (See Fig. 1.)

The burner is or maybe provided with the usual incandescent gas-mantle and coacting parts,which, however, I do not illustrate, since they form no essential part of this invention.

The operation is as follows: When the burner is not lighted, the gas is of course shut ofl and the parts are in the position shown in Fig. l, in which the port M through the plug L is turned in such position that gas cannot flow through the port M in the plug to the burner. When the parts are in this position, however, the gas does pass from the main supply through the lateral port or opening J, past the adjusting-screw valve I, into the passage-way or port K, and thence upwardly through the pilot-tube to the pilot-burner and burns with a small flame, (represented by S.) The supply of the gas to the pilot is continuous. Consequently the little flame S is likewise continuous.

When it is desired to light the burner, the lever N, which actuates the plug of the cock,

M is the gasis suitably manipulated by the devices 0 and O or in any other suitable manner. whereby the plug during its rotation from a fully-closed or shut-off position to afully-opened position assumes at one time the position shown in Fig. 2, in which the port M through it engages with the main gas-supply port T below the plug and also with a similar port T above the plug and at the same time connects with the short port P, which connects with the port or opening K leading to the pilot, so that during the short time the plug is in this position the gas will pass upwardly through the ports or passages T, M, and T to the burner, and likewise, following the direction indicated by the arrow in Fig. 2, will pass through the ports T M and P and K to the pilot-tube, and thence to the pilot-light at its upper end, and because of the additional supply of gas thus momentarily passing through the pilottube the flame at its upper end will be transferred into a forcibly-projected jet of flame somewhat resembling that resulting from the use of a blowpipe, and it will be projected directly into the gas, which by this time has appeared above the surface of the burner, so that its ignition will be absolute and reliable.

hen the plug L has been turned into the position in which the gas is fully turned on, then the port M through the plug will have moved into exact registration with the ports T and T in the cock and the excess supply of gas will have been out off from the pilot in a manner well understood.

During the reverse operation that is to say, while turning off the gas of course the same operation is repeated; but this does no harm, the only effect being momentarily to increase the flame because of the added consumption at the pilot.

The simplicity, efliciency, and reliability of my invention will be obvious to all who are familiar with this art, also that the arrangement of the parts may be materially changed from that illustrated by me and yet the same or substantially the same results attained. I therefore do not limit myself in any respect to the precise construction or arrangement of the parts as shown, although Ihave found them to be desirable because simple, effective, and inexpensive.

Having described my invention, I claim-- 1. The combination of agas-burner, a pilotlight therefor, a gas-regulating cock having ports for transmitting gas to the burner and to the pilot, a plug for the cock having asingle gas-passage therein, and an auxiliary port in the cock through which additional gas will be supplied to the pilot through the passage in the plug during its movement from its closed to its open position.

2. The combination of a gas-burner, apilotlight therefor, a gas-regulating cock having ports for transmitting gas to the burner and. to the pilot, a plug for the cock having a sin gle gas-passage therein, and an auxiliary port in the cock through which additional gas will be momentarily supplied to the pilot through the passage in the plug during its movement from its closed to its open position, said additional gas-supply being cut off when the plug is in its fully-opened position.

3. The combination of a gas-burner and pilot-light therefor, a gas-regulating cock and plug for transmitting gas to the burner and to the pilot, means whereby additional gas will be supplied to the pilot during the movement of the plug from its closed to its open position, and an opening in the side of the pilot-tube, whereby the pilot flame or jet will be directed into the gas-escaping from the burner proper.

4. The combination of a gas-burner and pilot-light therefor, a gas-regulating cock and plug having ports for transmitting gas to the burner and to the pilot and an auxiliary port in the cock, the ports in the parts respectively being of such size and so located as that during the movement of the plug from' its closed to its open position, an additional supply of gas will flow to the said auxiliary port through the port in the plug which supplies gas to the burner.

5. The combination of a gas-burner and pilot-light therefor, a gas-regulating cock and plug having ports for transmitting gas to the burner and to the pilot and an auxiliary port in the cock for increasing the supply of gas to the pilot, the ports in the parts respectivel y being of such size and so arranged that the increased supply of gas to the pilot cannot be had without simultaneously supplying gas to the burner.

in testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK M. BROOKS. Witnesses:

PHILLIPS ABBOTT, F. M. DOUSBACH. 

